6921009234 has 24 divisors (see below), whose sum is σ = 14999343372. Its totient is φ = 2306414880.

The previous prime is 6921009233. The next prime is 6921009241. The reversal of 6921009234 is 4329001296.

It can be written as a sum of positive squares in 2 ways, for example, as 6707118609 + 213890625 = 81897^2 + 14625^2 .

It is a super-2 number, since 2×6921009234² = 95800737634226533512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6921009233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26704 + ... + 120644.

Almost surely, 2^6921009234 is an apocalyptic number.

6921009234 is an abundant number, since it is smaller than the sum of its proper divisors (8078334138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6921009234 is a wasteful number, since it uses less digits than its factorization.

6921009234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98042 (or 98039 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 6921009234 is about 83192.6032409132. The cubic root of 6921009234 is about 1905.7085226922.

The spelling of 6921009234 in words is "six billion, nine hundred twenty-one million, nine thousand, two hundred thirty-four".